Please add the content below in client.conf file: For Switch and RADIUS authentication process
…………
#client 192.168.0.0/24 {
#   secret   = testing123-1
#   shortname   = private-network-1
#}
#
##--------------------------------------------------------------##
client 192.168.1.100/24{
   secret   = test
   shortname   = Dlink
}
##--------------------------------------------------------------##
client 192.168.0.0/16{
   secret   = testing123
   shortname   = private-network-1
}
…………

Please add the content below in users.conf file:
For Switch and RADIUS authentication process
…………
rfc3580   User-Password == “demo”
   Tunnel-Type = “VLAN”,
   Tunnel-Medium-Type = “IEEE-802”,
   Tunnel-Private-Group-Id = “1”,
   Reply-Message = “Hello, %u”
##----------Dlink-Guest VLAN TEST START ----------##
 dlink        User-Password == "dlink"
                  Ingress-Bandwidth-Assignment = "2000“                  Egress-Bandwidth-Assignment = “3000“
##------------Dlink-Guest VLAN TEST END ------------##
# This is a complete entry for “steve”. Note that there is no Fall-through
# entry so that no DEFAULT entry will be used, and the user will NOT
…………

#   This is the master dictionary file, which references the
#   pre-defined dictionary files included with the server.
#
#   Any new/changed attributes MUST be placed in this file, as
#   the pre-defined dictionaries SHOULD NOT be edited.
#
#   $Id: dictionary.in,v 1.4 2004/04/14 15:26:20 aland Exp $

#
#   The filename given here should be an absolute path.
#
$INCLUDE        ../share/freeradius/dictionary
$INCLUDE        ../share/freeradius/dictionary.dlink

#########################################################
# D-link Dictionary file
#########################################################

#
# User group attribute
#
VENDOR  D-LINK  171

BEGIN-VENDOR    D-LINK
     ATTRIBUTE       User-Level 1      integer
     ATTRIBUTE       Ingress-Bandwidth-Assignment 2 integer
     ATTRIBUTE       Egress-Bandwidth-Assignment 3 integer
     ATTRIBUTE       802-1p 4      integer
END-VENDOR    D-LINK

DES-3028:4#show bandwidth_control                                                                                     
Command: show bandwidth_control                                                                                       

Bandwidth Control Table                                                                                               

Port  RX Rate       TX Rate       Effective RX        Effective TX                                                   
      (Kbit/sec)    (Kbit/sec)    (Kbit/sec)          (Kbit/sec)                                                     
----  ----------    ----------    ----------------    ----------------                                               
1     no_limit      no_limit      2000    (RADIUS)    3000    (RADIUS)